彩色M型超声及组织多普勒成像对房颤患者心功能的评价

Evaluation of heart function in atrial fibrillation patients with color M-mode and Doppler tissue imaging

目的:应用超声心动图技术评价心房颤动患者的左心室收缩、舒张功能及左心房功能。方法:选取房颤患者35例,窦性心律患者30例。所有患者均无心脏明显扩大、左室收缩功能明显减退、严重瓣膜病或节段性室壁运动异常。采集房颤患者二尖瓣血流频谱、二尖瓣血流彩色M型图像、组织多普勒运动曲线及左房应变曲线的参数,并与窦性心律组比较。结果:与窦性心律组比较,房颤组舒张早期左室内血流传播速度(VP)、舒张早期二尖瓣环运动峰值速度平均值(Em)、收缩期侧壁运动峰值速度(Vs)及左房应变峰值速度(ε)降低(P<0.05)。结论:(1)与窦性心律组比较,房颤组患者左室收缩、舒张功能及左房功能降低。(2)彩色M型、组织速度成像及应变成像技术能较精确地定量分析房颤患者的心功能。

Objective： To evaluate the left ventricular （LV） diastolic function, left ventricular systolic function and left atrial （LA） function in patients with atrial fibrillation （AF） with echocardiography. Methods： The patients were divided into the group with AF（n=35） and the group with sinus rhythm（n=30）. No patients with significant dyskinetic cardiac chamber, systolic dysfunction of LV, valve disease or regional wall motion abnormality were included. Parameters derived from the transmittal flow spectral, color M-mode, tissue velocity imaging （TVI） and strain imaging were acquired in the group with AF and compared with the group with sinus rhythm. Results： In AF patients, the LV early diastolic flow propagation velocity （VP）, the peak velocity of mitral ring in the early diastolic phase （Era）, the peak velocity of lateral wall in the systolic phase （Vs） and the peak strain of LA were significantly decreased than those of the patients with sinus rhythm （P〈 0.05）. Conclusion： There are diastolic（and systolic） dysfunction of LV and dysfunction of LA in the group with AF compared with the sinus rhythm group. Parameters derived from the transmittal flow spectral, color M-mode, tissue velocity imaging （TVI） and strain imaging can quantify the LV and LA function in AF patients accurately and quantificationally.